Zach Drops By the Set - S5.E14

Zach Galifianakis shows up on the sets of various NBC shows (with fictional scenes and archival footage) either talking to the actors, or just standing in the background, finishing with a clip from a 1984 SNL episode hosted by Robin Williams showing a bearded child (supposedly Galifianakis) and the words: "Zack Galifianakis: on TV for over 30 years."